OMEROS CORP (OMER) - Dilution Analysis

Visualizing historical and potential share dilution over time

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Dilution Analysis

High Risk

Significant dilution risk

Last updated: May 13, 2026

Risk Assessment Details

Potential Dilution: 117.28% of current shares

Recent Dilution: 26.27% (2 years)

Historical Dilution Factor: significant recent dilution

Outstanding Shares

72M

Potential Supply

84M

Additional shares possible

Splits

None

Past 2 years

Summary

OMER currently has 71.9M outstanding shares. with significant dilution risk as 84.3M authorized shares could dilute existing holders by 117.3%. The company has significantly diluted shareholders by 26.27% over the past 2 years, indicating aggressive capital raising.

Share Structure Timeline

Outstanding Shares

Total Supply

Historical Data Points

Date	Event	Outstanding	Supply
May 13, 2026	10-Q filing \| 71.9M shares outstanding	72M	84M
Mar 31, 2026	10-K filing \| 72.0M shares outstanding	72M	84M
Nov 13, 2025	10-Q filing \| 66.3M shares outstanding	66M	90M
Aug 14, 2025	10-Q filing \| 68.1M shares outstanding	68M	88M
May 15, 2025	10-Q filing \| 58.1M shares outstanding	58M	98M
Mar 31, 2025	10-K filing \| 58.2M shares outstanding	58M	98M
Nov 13, 2024	10-Q filing \| 57.9M shares outstanding	58M	98M
Aug 07, 2024	10-Q filing \| 57.9M shares outstanding	58M	98M
Jun 03, 2024	8-K filing: Omeros Corporation entered into a Credit and Guaranty Agreement for a senior secured term loan facility and repurchased $118.1 million aggregate principal amount of its 5.25% Convertible Senior Notes due on February 15, 2026. ($88.2M proceeds)	59M	97M
May 15, 2024	10-Q filing \| 58.8M shares outstanding	59M	97M
Apr 01, 2024	10-K filing \| 62.7M shares outstanding	63M	94M
Nov 09, 2023	10-Q filing \| 62.9M shares outstanding	63M	93M
Aug 09, 2023	10-Q filing \| 62.8M shares outstanding	63M	93M
May 09, 2023	10-Q filing \| 62.8M shares outstanding	63M	93M
Mar 13, 2023	10-K filing \| 62.7M shares outstanding	63M	94M
Nov 09, 2022	S-3 filing: Omeros Corporation may from time to time offer and sell common stock, preferred stock, debt securities, depositary shares, warrants, subscription rights, and units up to $300,000,000.	63M	94M
Nov 09, 2022	10-Q filing \| 62.7M shares outstanding	63M	94M
Aug 09, 2022	10-Q filing \| 62.7M shares outstanding	63M	0
May 10, 2022	10-Q filing \| 62.7M shares outstanding	63M	0
Mar 01, 2022	POS AM filing: Omeros Corporation may from time to time offer and sell common stock, preferred stock, debt securities, depositary shares and subscription rights up to $300,000,000.	63M	0
Mar 01, 2022	10-K filing \| 62.3M shares outstanding	62M	170K
Nov 09, 2021	10-Q filing \| 62.5M shares outstanding	63M	0
Aug 09, 2021	10-Q filing \| 62.4M shares outstanding	62M	0
May 10, 2021	10-Q filing \| 62.3M shares outstanding	62M	0
Mar 01, 2021	10-K filing \| 61.7M shares outstanding	62M	0
Nov 09, 2020	10-Q filing \| 61.7M shares outstanding	62M	0
Aug 10, 2020	10-Q filing \| 54.5M shares outstanding	55M	0
May 11, 2020	10-Q filing \| 54.2M shares outstanding	54M	0
Mar 02, 2020	10-K filing \| 54.2M shares outstanding	54M	0

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